Page authors: Don Knoke, David Giblin
Neoholmgrenia hilgardii
Hilgard's suncup

Distribution: Occurring east of the Cascades crest in Washington; Okanogan County to Klickitat County, Washington, and historic (1919) in Multanomah County, Oregon.

Habitat: Sagebrush deserts.

Flowers: May-July

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern


Annual, often broader than tall, with several stems, the branches ascending, simple to freely-forked, 3-15 cm. long, covered with fine, appressed hairs.


Leaves alternate, linear to linear-spatulate, 5-25 mm. long and 0.5-2 mm. broad, mostly basal, the lower branches nearly leafless;


Flowers sessile in crowded, short, linear-bracteate spikes; calyx tube 0.5-2 mm. long, the 4 lobes distinct and reflexed; petals lemon yellow, ovate, 2.5-5 mm. long; stamens 8, the filaments short; style exerted, 4.5-6 mm. long, the stigmas capitate: ovary inferior, 4-celled.


Capsule spindle-shaped, 4-8 mm. long

Accepted Name:
Neoholmgrenia hilgardii (Greene) W.L. Wagner & Hoch
Publication: Novon 19: 132. 2009.

Synonyms & Misapplications:
Camissonia hilgardii (Greene) P.H. Raven
Holmgrenia hilgardii (Greene) W.L. Wagner & Hoch
Oenothera andina Nutt. var. hilgardii (Greene) Munz
Oenothera hilgardii Greene [HC]
Additional Resources:

PNW Herbaria: Specimen records of Neoholmgrenia hilgardii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Neoholmgrenia hilgardii checklist entry.

OregonFlora: Neoholmgrenia hilgardii information.

E-Flora BC: Neoholmgrenia hilgardii atlas page.

CalPhotos: Neoholmgrenia hilgardii photos.

USDA Plants: Neoholmgrenia hilgardii information.

46 photographs:
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